206178031400 has 48 divisors (see below), whose sum is σ = 522942467040. Its totient is φ = 74973828800.

The previous prime is 206178031391. The next prime is 206178031427. The reversal of 206178031400 is 4130871602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46856444 + ... + 46860843.

It is an arithmetic number, because the mean of its divisors is an integer number (10894634730).

Almost surely, 2^206178031400 is an apocalyptic number.

206178031400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206178031400 is an abundant number, since it is smaller than the sum of its proper divisors (316764435640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206178031400 is a wasteful number, since it uses less digits than its factorization.

206178031400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93717314 (or 93717305 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 206178031400 in words is "two hundred six billion, one hundred seventy-eight million, thirty-one thousand, four hundred".